Free Coordination and Control MCQs with Answers
1,687 Coordination and Control MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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- A. Left cerebral hemisphere
- B. Right cerebral hemisphere
- C. Hippocampus
- D. Corpus callosum
Explanation: The left cerebral hemisphere controls the movement of the right side of the body.
Correct answer: Left cerebral hemisphere- A. Nerve cell
- B. Reflex arc
- C. Receptor cells
- D. Mixed nerve
Explanation: The path taken by nerve impulses during reflex action is called the reflex arc.
Correct answer: Reflex arc- A. 1
- B. 5
- C. 10
- D. 12
Explanation: In total, there are 31 pairs of spinal nerves grouped regionally by spinal region.
Correct answer: 1- A. Spinal reflexes have 4 elements
- B. Lower motor neurons have their cell bodies in the anterior column of grey matter
- C. Grey matter that lies transversely is the lateral commissure
- D. The spinal cord has 3 equal parts
Explanation: B is the correct option as the cell bodies of the lower neurons are located in the ventral horn of the spinal cord gray matter and in the…
Correct answer: Lower motor neurons have their cell bodies in the anterior column of grey matter- A. lndole propionic acid
- B. lndole carboxylic acid
- C. lndole acetaldehyde
- D. Indole acetic acid
Explanation: The important member of the auxin family is indole-3-acetic acid which is IAA, which generates the majority of auxin effects in plants.
Correct answer: Indole acetic acid- A. Z discs
- B. Dendrites
- C. Sarcomeres
- D. Neuromuscular junctions
Explanation: The neuromuscular junction is a highly specialised synapse between a motor neuron nerve terminal and its muscle fiber that is responsible…
Correct answer: Neuromuscular junctions- A. Many dendrites
- B. Many genes
- C. Non-myelinated axons
- D. Myelinated axons
Explanation: Myelinated axons are axons that are surrounded by a myelin sheath, a fatty insulating layer.
Correct answer: Myelinated axons- A. Stretch reflex
- B. Spinal reflex
- C. Golgi tendon reflex
- D. Crossed Extensor Reflex
Explanation: The Golgi tendon reflex (also called inverse stretch reflex, autogenic inhibition, tendon reflex) is an inhibitory effect on the muscle…
Correct answer: Golgi tendon reflex- A. Limbic system
- B. Thalamus
- C. Hypothalamus
- D. Cerebrum
Explanation: Out of all the options, only option A is correct, as the limbic system is responsible for our basic and primitive emotions.
Correct answer: Limbic system- A. Brain
- B. Skull
- C. Heart
- D. Lungs
Explanation: The spinal cord is the centre for many reflexes, and it serves as a pathway for conduction of impulses to and from different parts of the…
Correct answer: Brain- A. Receptor
- B. Effector
- C. Sensory neuron
- D. Motor neuron
Explanation: Impulse first is received from the receptive, after which it is carried on by the sensory neuron, which then goes towards the interneuron…
Correct answer: Effector- A. A climatic burst of respiratory activity in fruit ripening
- B. It is not associated with ethane production
- C. It helps in fruit ripening
- D. Promotes root growth
Explanation: Ethylene inhibits stem and root growth. Breaks the dormancy of the bud. Promotes flowering in Pineapple, as well as promotes fruit ripening.
Correct answer: Promotes root growth- A. Receptors
- B. Effectors
- C. Midbrain
- D. All parts of the body
Explanation: A spinal nerve is a mixed nerve that carries motor, sensory, and autonomic signals between the spinal cord and the body.
Correct answer: Effectors- A. Regulation
- B. Coordination
- C. Control
- D. Sensation
Explanation: The correct term for pain, touch, sound, and sight is "sensation." Sensation refers to the process by which our sensory organs detect…
Correct answer: Sensation- A. Cerebrum
- B. Medulla oblongata
- C. Cerebellum
- D. Pons
Explanation: The medulla oblongata narrows down into an oval-shaped hollow cylinder, the spinal cord, running through the vertebral column.
Correct answer: Medulla oblongata- A. It cushions the brain
- B. It protects the central nervous system
- C. It increases pressure at the base of the brain
- D. It fills the subarachnoid space
Explanation: Cerebrospinal fluid (CSF) is a clear, colorless fluid that circulates in the brain and spinal cord, acting as a cushion and protecting…
Correct answer: It increases pressure at the base of the brain- A. Frontal
- B. Parietal
- C. Temporal
- D. Occipital
Explanation: A is correct because the frontal lobe of the brain is involved in speaking (expression of language).
Correct answer: Frontal- A. Frontal
- B. Parietal
- C. Temporal
- D. Occipital
Explanation: The correct option is C, as the temporal lobe is involved in short-term memory, speech, musical rhythm, and some degree of smell…
Correct answer: Temporal- A. Monosynaptic reflex
- B. Polysynaptic reflex
- C. Hemi Synaptic reflex
- D. None of these
Explanation: Option A is correct since the stretch reflex involves a direct connection b/w sensory and motor neurons and thus, the relay neuron is not…
Correct answer: Monosynaptic reflex- A. Cranial nerves
- B. Spinal nerves
- C. Frontal nerves
- D. Both a and b
Explanation: The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord.
Correct answer: Both a and b